title: A new strain of Arthrinium phaeospermum isolated from Carex kobomugi Ohwi is capable of gibberellin production.
abstract: Plant growth-promoting endophytic fungi with gibberellin-producing ability were isolated from the roots of Carex kobomugi Ohwi, a common sand-dune plant, and bioassayed for plant growth-promotion. A new strain, Arthrinium phaeospermum KACC43901, promoted growth of waito-c rice and Atriplex gemelinii. Analysis of its culture filtrate showed the presence of bioactive GA(1) (0.5 ng/ml), GA(3) (8.8 ng/ml), GA(4) (4.7 ng/ml) and GA(7) (2.2 ng/ml) along with physiologically inactive GA(5) (0.4 ng/ml), GA(9) (0.6 ng/ml), GA(12) (0.4 ng/ml), GA(15) (0.4 ng/ml), GA(19) (0.9 ng/ml) and GA(24) (1.8 ng/ml). The fungal isolate was identified through sequence homology and phylogenetic analysis of 18S rDNA (internal transcribed region).
authors.affiliation: Department of Life Science and Biotechnology, Kyungpook National University, Daegu, South Korea.
authors.forename: Sumera Afzal
authors.initials: SA
authors.lastname: Khan
authors.forename: Muhammad
authors.initials: M
authors.lastname: Hamayun
authors.forename: Ho-youn
authors.initials: HY
authors.lastname: Kim
authors.forename: Hyeok-jun
authors.initials: HJ
authors.lastname: Yoon
authors.forename: Jong-cheol
authors.initials: JC
authors.lastname: Seo
authors.forename: Yeon-sik
authors.initials: YS
authors.lastname: Choo
authors.forename: In-jung
authors.initials: IJ
authors.lastname: Lee
authors.forename: Sang-dal
authors.initials: SD
authors.lastname: Kim
authors.forename: In-koo
authors.initials: IK
authors.lastname: Rhee
authors.forename: Jong-guk
authors.initials: JG
authors.lastname: Kim
mesh_terms: D001203:Ascomycota / Q000145:classification / Q000302:isolation & purification / Q000502:physiology*; D027466:Atriplex / Q000254:growth & development* / Q000382:microbiology*; D031255:Carex Plant / Q000382:microbiology*; D005875:Gibberellins / Q000096:biosynthesis*; D012275:Oryza / Q000254:growth & development* / Q000382:microbiology*; D018517:Plant Roots / Q000382:microbiology; D013045:Species Specificity
chemical_list: D005875:Gibberellins